b. Cut ceiling and roof holes as follows: Ceiling Hole = 8-3/4" (222 mm) diameter Roof Hole = 9-3/8" (238 mm) diameter

c. DO NOT ALLOW DEBRIS TO FALL INTO THE FURNACE. THIS COULD CAUSE UNSAFE OPERATION AND VOIDS THE FURNACE WARRANTY. Use the top cap that comes with the furnace packaging (or alternate protector) to prevent debris from falling into the furnace before the final roof jack connection is made.

CUT DUCT OPENING (FINGER TABBED ONLY)

a.Place duct connector through the floor open- ing with bottom tabs resting on top of the supply air duct.

b.Center duct connector and push back against rear edge of floor opening.

c.Mark cut-out location (tab area) and remove duct connector.

d.Cut out duct opening 1/4" larger than area marked.

INSTALL FURNACE MOUNTING PLATE

a. Place mounting plate (supplied within duct connector) at rear of the floor opening (See Figure 15).

INSTALLING PLATINUM SERIES 14” ROUND DUCT CONNECTOR

a.Place duct connector through the floor open- ing. (See Figure 15).

b.Secure duct connector to floor.

INSTALLING SCREW DOWN DUCT CON- NECTOR

a. Apply a bead of caulking, mastic, or other approved sealant around bottom side of 1/2” flange and restrictor plate, when applicable. b. Locate the duct connector over duct and carefully lower screw down duct connector

into place.

c. Once duct connector is located on duct, temporarily hold in place while fastening duct connector to the floor using flat head screws or nails. Be sure flanges of duct connector stay in contact with the duct.

d. Screw plenum to duct making sure a seal is made between the duct and the duct connec- tor. Additional screws may be added if re- quired.

e. Cut away duct along edge of flange allowing the center to drop into the duct. Remove section of duct with caution, as edges will be sharp.

INSTALLING FINGER TABBED DUCT CON- NECTORS

a.Place duct connector through the floor open- ing with bottom tabs extending through the duct opening. (See Figure 15)

b.Secure duct connector to floor.

c.Bend bottom tabs under and up tightly against the supply air duct (See Figure 16).

NOTE: The duct connector is designed for use on ducts 12" in width. When using the connector on 12" wide ducts, there may be insufficient clearance to bend the tabs on two sides of the duct connector. In such cases the tabs may be attached to the sides of the duct by using sheet metal screws or other suitable fasteners. (See Figure 17).

If sealant, mastic, or tape is used to provide a better seal, it should be approved by applicable national or local codes.

ALTERNATE ATTACHMENT METHODS

This procedure may also be used to install a furnace duct connector to narrow metal ductwork where insufficient clearance prevents

TABS

DUCT

1.INSERT DUCT CONNECTOR INTO DUCT CUT-OUT.

TABS

DUCT

2.BEND BOTTOM TABS OVER AND ONTO THE UNDERNEATH DUCT SERVICE.

Figure 16. Installation of Duct Connector

Duct Connector

Narrow Duct

Duct

Figure 17.

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Nordyne M1G, M1B, M1S, M1M owner manual Alternate Attachment Methods

M1M, M1S, M1B, M1G specifications

Nordyne, a renowned player in the HVAC industry, has introduced a range of high-efficiency gas furnaces, including the M1S, M1G, M1B, and M1M models. Each of these furnaces is designed to provide efficient heating solutions tailored to the needs of homeowners.

The M1S series is well-known for its reliability and performance. It features a single-stage heating process that delivers consistent warmth to any space. With its multi-speed blower, the M1S ensures quiet and comfortable airflow, adapting seamlessly to varying temperature demands. Its robust construction coupled with an energy-efficient design makes it an ideal choice for those looking for dependable heating without sky-high utility bills.

The M1G model steps it up with a two-stage heating system that offers enhanced comfort and efficiency. By operating at a lower speed during milder conditions, the M1G can effectively reduce energy consumption while still maintaining a cozy environment. It is equipped with a variable-speed blower that not only enhances efficiency but also minimizes noise, making it perfect for residential areas. The M1G is designed with advanced safety features, including an integrated control board that monitors furnace functions to ensure optimal performance.

For those seeking a budget-friendly option without compromising on quality, the M1B model provides a solid performance with its straightforward, reliable single-stage heating. While it may lack some of the advanced features found in higher-end models, the M1B is built for ease of use with straightforward controls and maintenance, making it a great option for families.

The M1M model integrates cutting-edge technology with a focus on maximum efficiency. Featuring a modulating gas valve, this model can adjust its output based on real-time heating requirements. This adaptability ensures that the furnace operates at peak efficiency, significantly lowering energy bills and improving overall comfort. The M1M also boasts advanced diagnostic capabilities that allow for easy troubleshooting, thus reducing maintenance time and costs.

In summary, Nordyne's M1 series furnaces—M1S, M1G, M1B, and M1M—offer a range of options to meet diverse heating needs. With technologies designed for efficiency, reliability, and comfort, Nordyne continues to solidify its reputation as a leader in the HVAC market, providing homeowners with effective heating solutions tailored to their lifestyles and budgets.